12x-39=8x+9

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Solution for 12x-39=8x+9 equation:


Simplifying
12x + -39 = 8x + 9

Reorder the terms:
-39 + 12x = 8x + 9

Reorder the terms:
-39 + 12x = 9 + 8x

Solving
-39 + 12x = 9 + 8x

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '-8x' to each side of the equation.
-39 + 12x + -8x = 9 + 8x + -8x

Combine like terms: 12x + -8x = 4x
-39 + 4x = 9 + 8x + -8x

Combine like terms: 8x + -8x = 0
-39 + 4x = 9 + 0
-39 + 4x = 9

Add '39' to each side of the equation.
-39 + 39 + 4x = 9 + 39

Combine like terms: -39 + 39 = 0
0 + 4x = 9 + 39
4x = 9 + 39

Combine like terms: 9 + 39 = 48
4x = 48

Divide each side by '4'.
x = 12

Simplifying
x = 12

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